Timber sash and case windows are a wonderful feature in any home, although as the years pass, these remarkable windows need a little further care and attention.
The sash cords break under years of strain, draught seals deteriorate through prolonged neglect, and bottom rails succumb to rot where maintenance has been overlooked. The window begins to rattle, then becomes stiff, and ultimately is unable to close as it should.
Woodfellas has spent over two decades as timber sash and case window specialists, serving Scottish homes throughout Castlemilk from our workshop.
When a window is beyond repair, we provide restoration, repairs, and even the crafting of tailor-made replacements.
Ring us on 07920 057592 or get in touch via our contact form to arrange your free visit and written quote!
What is a timber sash and case window
The title describes the function.
The sash refers to the sliding panel of glass itself, whilst the case is the hollow box frame that is constructed within the wall surrounding the window opening.
Housed within each case are two counterweights, one corresponding to the upper sash and one to the lower. These weights are suspended from sash cords that pass over pulley wheels positioned at the topmost section of the frame.
Raise the lower sash and the weights drop on the opposite side. Let go of it and they hold the sash in place.
Sash and case windows move vertically, whereas casement windows swing outward on hinges.
Both sashes glide independently of one another, meaning you can open them from the top, the bottom, or indeed both at once. Your home benefits from superb ventilation control without any panel swinging inward into the room or outward towards the street.
When the mechanism functions correctly, you barely notice it at all.
When the cords break, as they inevitably do after years of regular use, the sash falls and stays in that lowered position or gets increasingly difficult to use.
That is exactly where Woodfellas comes into its own.

Timber sash window services and refurbishment
Each traditional sash window requires its own solution.
Our sash windows team in Castlemilk takes the time to grasp the precise requirements of your windows before recommending whether repair or full refurbishment is the most appropriate course of action for you.
Window draught-proofing
When a window remains structurally intact yet does not provide optimal performance, a full refurbishment presents itself as the most logical course of action.
Using joinery methods that complement traditional windows, our experienced craftsmen are able to improve your glazing and install draught-proofing throughout your home.
A refurbished sash and case window in your Castlemilk property ought to seem as though it was always exactly as it should be.
Every installation we undertake we complete is guided by one simple ambition: effortless operation, low-noise fitting, and a truly warm presence within the space.
Sash cord and weight replacement
Sash cord replacement remains our most commonly carried out repair within the services we offer.
When the cords snap, the weights dangle unhelpfully inside the case with nothing at all linking them to the sash.
We reach the pocket piece, take out the weights, install fresh sash cords, and position the pulleys accurately.
Our team will consistently inspect the full condition of the window while on site, ensuring nothing goes unnoticed.
Timber repairs
Castlemilk’s lower rails and sills bear the most severe weather conditions.
Where rot is confined to part of the rail, we take out the damaged timber and splice in new sections using matched traditional timber. The repair blends seamlessly with the surrounding wood, leaving the rest of the original window fully intact.
We are firmly of the opinion that a window which remains structurally sound should not be discarded simply because an single issue impacts only one part of it.
Supplying and fitting bespoke sash windows
When a window is beyond economical repair, we manufacture new sash windows to your exact specifications in our workshop and provide and fit them at your premises.
Every replacement window is carefully crafted and manufactured to the precise measurements of each opening, offered in hardwood or treated pine. We take considerable care to accurately replicate the profile, proportions, and glazing bar arrangement of the original window.
Based in Castlemilk, we make and fit new sash and case windows across the area using premium materials and time-honoured techniques.
Our range of sash and case windows covers everything from a single replacement sash through to a complete set of new windows for a listed building.
Double glazing and enhanced security hardware are provided as standard features.
Double glazed sash windows in Castlemilk
Improve both the aesthetic appeal and everyday comfort of your home with the classic elegance of double glazed sash and case windows.
Our slimline sealed units are made to sit neatly within the original glazing rebate, maintaining the sash profile and glazing bar pattern completely without modification.
From the outside, the timber window appears identical to the original.
Here is the reason so many homeowners throughout Castlemilk are deciding to improve their traditional sash and case windows with double glazing.

Energy efficiency
Our glazing service delivers a substantial improvement to energy efficiency.
This translates straight away into reduced energy bills, as your heating system no longer needs to labour as intensely to keep a pleasant, comfortable temperature throughout your home.
Noise reduction
Reduced noise is another benefit householders notice very quickly!
Living on a busy road or near a major junction, double glazed sash windows offer a significant decrease in the amount of noise that passes through.
Sash and case windows in Scotland’s conservation areas and listed buildings
Scotland’s architectural landscape is as breathtaking as it is historically profound.
Preserving the distinctive character of our built heritage is exactly what conservation areas are designed to achieve, and sash and case windows form an essential part of that cherished identity. Rely on Woodfellas to honour that heritage through expert timber window restoration.
If your property is located within one of these areas, or is a listed building, specific rules govern window replacement and must be understood before any work is commissioned.
We have been working on premises situated within conservation areas for over twenty years.
We know precisely what the council requires, how to navigate the consent process with confidence, and how to restore or replace windows in a manner that meets every requirement without needless delays or repeated correspondence.
For a team that knows listed buildings and conservation area work as well as they understand the windows themselves, get in touch today for a complimentary site visit and written quote.
Sash and case window faults we fix in Castlemilk
The sash is sliding down and failing to remain in the open position.
Changing faulty sash cords is the repair our professional team performs most frequently on sash and case windows, and provided the window is otherwise in good condition, it is a entirely simple task for our skilled professionals.
Draughts and rattling
The seal between the sash and the frame has worn away or was simply never installed in the first place. When this gap exists, it is also fairly common for the sash and case window to shake noticeably in the wind as a direct result of that same gap.
Incorporating draught-proofing during a planned service appointment deals with every one of the concerns comprehensively and at the same time.
Rotten bottom rail
The lower section of the lower sash represents the weakest component of a sash and case window.
Where rot is limited to part of the rail, we remove the damaged timber and insert new sections using matched material.
The remainder of the original window is left completely untouched.
Window stuck shut by paint
Years of using paint to safeguard the sash against Scotland’s damp climate can cause it to become firmly stuck to the frame.
We free the sash, wipe down surfaces, fine-tune the fit as needed, and restore the mechanism to full operation.
The cords and pulleys are inspected throughout the process, saving you several repair visits.
Single glazing
Original single-glazed panes lose heat quickly and offer little resistance to street noise. We fit double glazing whilst preserving the visible profile of the window entirely.
Sash and case windows Castlemilk FAQs
Is it better to refurbish sash and case windows or replace them?
Whether to renovate or swap out depends on the window’s existing condition. A solid box frame with fully intact sashes makes refurbishment the best choice. You maintain good performance without sacrificing original character. Where the frame has significantly deteriorated or timber rot is beyond repair, replacement becomes the more suitable solution.
Can sash and case windows take double glazing?
Yes! We use slim profile sealed units that sit neatly within the existing glazing rebate without widening the sash or changing the glazing bar pattern. From the outside the window looks absolutely identical to the original.
Get a free quote for sash and case windows in Castlemilk
Whatever your sash window needs may be in Castlemilk, from restoration and repair through to full replacement, Woodfellas has the experience to handle everything.
Contact with our knowledgeable team today and we will walk you through the most appropriate solution for every window in your home. Every quotation we offer is free, presented in writing, and carries absolutely no obligation. Should you choose to proceed, we will organise everything entirely around your schedule.
Every window is crafted in our own workshop using traditional methods and installed by our own joiners throughout Scotland.
Contact us today by calling 07920 057592 or by completing the form on our contact page, and we will respond to you within 24 hours.